Stadium: Court 2 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Portimao | 2023/03/13 15:35 | Guy Den Heijer v Miguel Pereira Lopes | 6-1,6-3 |
| ITF M25 Quinta Do Lago | 2023/03/09 17:20 | Jesper De Jong v Guy Den Heijer | 6-3,6-1 |
| ITF M25 Quinta Do Lago | 2023/03/09 13:30 | Sean Hodkin v Guy Den Heijer | 4-6,4-6 |
| ITF M25 Quinta Do Lago | 2023/03/08 16:15 | Luis Miguel Saraiva v Guy Den Heijer | 4-6,3-6 |
| ITF M25 Loule | 2023/02/26 10:00 | Timofey Stepanov v Guy Den Heijer | 6-4,6-2 |
| ITF M25 Faro | 2023/02/21 10:00 | Francois Musitelli v Guy Den Heijer | 6-7,7-6,12-10 |
| ITF M25 Faro | 2023/02/20 10:00 | Guy Den Heijer v Ryotaro Matsumura | 6-4,4-6,10-3 |
| ITF M25 Faro | 2023/02/19 10:00 | Guy Den Heijer v Stepan Pecak | 6-3,6-7,12-10 |
| ITF M25 Portimao | 2023/03/13 15:55 | Freddy Humphries v Mikel Martinez | 0-6,0-6 |
| ITF M25 Portimao | 2023/03/12 13:00 | Luis Miguel Saraiva v Mikel Martinez | 2-6,1-6 |
| ITF M25 Quinta Do Lago | 2023/03/09 17:05 | Leopold Zima v Mikel Martinez | 6-3,6-2 |
| ITF M25 Quinta Do Lago | 2023/03/08 15:45 | Pijus Vaitiekunas v Mikel Martinez | 7-5,1-6,9-11 |
| ITF M25 Quinta Do Lago | 2023/03/08 12:00 | Afonso Portugal v Mikel Martinez | 3-6,5-7 |
| ITF M25 Quinta Do Lago | 2023/03/07 12:30 | Thomas George Brun v Mikel Martinez | 4-6,0-6 |
| ITF M25 Faro | 2023/02/19 10:00 | Mikel Martinez v Taketo Takamisawa | 4-6,4-6 |
| ITF M25 Vila Real de Santo Antonio | 2023/02/14 09:30 | Tiago Pereira v Mikel Martinez | 6-2,6-1 |